Brush construction



March 1958 A. L. LE FEBYRVE 2,826,777

BRUSH CONSTRUCTION Filed Jan. 18, 1955 .filgzllvron. W 6 22 United States Patent 2,826,777 BRUSH CONSTRUCTION Alfred L. Le Febvre, West Suflield, Conn, assignor to Stanley Home Products, Inc., Westfield, Mass., at corporation of Massachusetts Application January 18, 1955, Serial No. 482,464

1 Claim. (Cl. 15-9205) This invention relates to improvements in brush manufacture and is directed more particularly to a brush construction having a multiplicity of bristles secured between metal back members.

The principal objects of the invention is the provision of a brush construction wherein bristles are firmly secured to back forming members against displacement.

According to one novel feature of the invention elongated sheet metal plate members are provided between which bristles are disposed and the said members are secured together in such a manner as to clamp the bristles against displacement.

According to another novel feature of the invention the plate members are provided with elongated channels that are more or less complemental and which are arranged to cooperate so as to tightly grip or snub the bristles against displacement.

The plate members according to the invention may be of any length desired and they may have any desired transverse contour whereby to form brushes of different shapes for many and various purposes.

All of the above cited objects I accomplish by means of such structure and relative arrangement of parts thereof, as will fully appear by a perusal of the description below and by various specific features which will be fully hereinafter set forth.

To these above and other ends and with the foregoing and various other and ancillary features and advantages and objects of my invention as will become more readily apparent as the description proceeds, my invention consists in certain features of novelty, in a mode of operation, and in the combination, organization, and arrangement of parts as will be hereinafter more particularly pointed out in the claim hereunto annexed and more fully described and referred to in conjunction with the accompanying drawings wherein:

Figs. 1 and 2 are plan views of cooperating plates for forming the brush of the invention;

Figs. 3 and 4 are sectional views on the lines 3-3 and 44 of Figs. 1 and 2; and

Fig. 5 is a transverse sectional view through the plates of Fig. 1, shown in secured together bristle clamping relation.

Referring now to the drawings more in detail the invention will be fully described.

Cooperating plates 2 and 4 formed all from strip metal are shown in Figs. 1 and 2. Said plates may be of any desired length but may be formed in long lengths for cutting into a plurality of shorter lengths.

The plate 2 will be referred to as an inner plate and the plate 4 will be referred to as outer plate for purposes of disclosure merely. It will be understood that either plate may be outermost in a formed brush depending upon the form of the brush and the manner in which it is to be associated with other components.

The plate 2 is formed to have an elongated depressed channel portion 6 and likewise the plate 4 is formed with 2,826,777 Patented Mar. 18, 1958 a similar channel portion 8. The channels are arranged to be more or less complemental.

The plate 2 is provided with longitudinally spaced tongue receiving sockets 10 which are disposed along the channel portion 6 thereof.

The plate 4 is provided with longitudinally spaced elongated tongues 12 which are struck up from the channel portion 8 of said plate. The spacing of the tongues corresponds to the spacing of the sockets 10 of the plate 2 so as to be receivable in said sockets.

The plates 2 and 4 cooperate to form a bristle holding back. A holder for the bristles of a back is commonly called a back.

In forming a brush the desired amount of bristles 14 is laid transversely across one of the plates and the other plate is disposed on the bristles.

In this assembling the tongues of one plate are extended between the bristles and through the sockets of the other plate. The plates pressed together to the desired extent and the ends of the tongues are staked or clenched over to firmly secure the plates together in bristle clamping relation, as in Fig. 5.

A novel feature of the invention is that the channel formations of the plates are arranged in the clamping relation of the plates to bend the bristles therebetween to some extent so as to firmly snub the bristles against displacement.

That is, the action of the channels is to form the bristles more or less in the shape of an 8 thereby to clamp them against longitudinal movement from between the plates.

Such snubbing and clamping is a decided improvement over a construction where flat plates are employed which press upon straight bristles so that the bristles are easily displaced by being pulled longitudinally.

The plates may be of any desired length and of any relative transverse widths depending upon the form of brush to be produced.

' Marginal edge portions of the plates may be at various angles in order to direct the free ends of the bristles in such a manner as may be desired. One plate may be of greater transverse width than the other plate so that the edge portions of said other plate may be arranged to embrace opposite ends of the bristles.

Aside from providing the snubbing means the channel of one plate may receive the bent over tongues of the other plate so that there are no projecting tongue portions along the one plate and either the inner or outer plate may be provided with apertures for tongues of the other plate.

The plates embodying the novel features may be formed and arranged to provide brushes of various forms and sizes and following the assembly of the plates and bristles the plates may be formed or shaped as desired.

The invention may be embodied in other specific forms without departing from the essential characteristics thereof. Hence, the present embodiments are therefore to be considered in all respects merely as being illustrative and not as being restrictive, the scope of the invention being indicated by the appended claim rather than by the foregoing description, and all modifications and variations as fall within the meaning, the purview and range of equivalency of the appended claim are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the United States is:

A brush construction comprising in combination, elongated upper and lower superposed relatively thin bendable sheet metal strips and a plurality of elongated bristles having central portions disposed between and transversely of said strips and opposite end portions extending outwardly from opposite longitudinal side edges of said strips,

3 said lower strip having a longitudinally extending portion inwardly of opposite side portions thereof depressed below the plane of the upper side of said side portions providing a depressed longitudinally extending lower channel, said upper strip having a longitudinally extending portion between opposite side portions thereof depressed below the planes of said opposite side portions providing a longitudinal upper channel in the upper face of the strip and a longitudinal raised rib portion on the lower face of said strip not greater in transverse Width than the transverse width of the channel of the lower strip for nesting in said channel, said upper strip provided with elongated tongue receiving transversely extending slots relatively spaced along the depressed portion thereof, said lower strip provided with tongue portions struck up along the depressed portion thereof extending through the slots of the upper strip with end portions thereof clenched over into the upper channel of said upper strip securing the strips together in bristle clamping relation with the raised rib portion of the upper strip displacing portions of thecentral portions of the bristles downwardly relative to the opposite end portions thereof and into the channel of the lower strip. whereby said rib portion and channel cooperate to snub and clamp said bristles between said strips.

References Cited in the file of this patent UNITED STATES PATENTS 719,156 Spence Jan. 27, 1903 2,039,565 Speik May 5, 1936 2.288,337 Whittle June 30, 1942 

